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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-12 09:52:12 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-12 09:52:12 -0800 |
commit | da8cadb31b82c9d41fc593c8deab6aa20b162d6b (patch) | |
tree | 5640a34aa485f254de503a17833046645ade47f6 | |
parent | 02ec96be2b45d9f2712687ad107038ef390b24c2 (diff) | |
parent | 0de56d1ab83323d604d95ca193dcbd28388dbabb (diff) | |
download | linux-da8cadb31b82c9d41fc593c8deab6aa20b162d6b.tar.gz linux-da8cadb31b82c9d41fc593c8deab6aa20b162d6b.tar.bz2 linux-da8cadb31b82c9d41fc593c8deab6aa20b162d6b.zip |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Fix endless loop in cheetah_xcall_deliver().
[SERIAL] sparc: Infrastructure to fix section mismatch bugs.
-rw-r--r-- | arch/sparc64/kernel/smp.c | 19 | ||||
-rw-r--r-- | drivers/serial/suncore.c | 33 | ||||
-rw-r--r-- | drivers/serial/suncore.h | 3 | ||||
-rw-r--r-- | drivers/serial/sunhv.c | 14 | ||||
-rw-r--r-- | drivers/serial/sunsab.c | 16 | ||||
-rw-r--r-- | drivers/serial/sunsu.c | 16 | ||||
-rw-r--r-- | drivers/serial/sunzilog.c | 41 |
7 files changed, 71 insertions, 71 deletions
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index 894b506f9636..c39944927f1a 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -476,7 +476,7 @@ static inline void spitfire_xcall_deliver(u64 data0, u64 data1, u64 data2, cpuma */ static void cheetah_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask) { - u64 pstate, ver; + u64 pstate, ver, busy_mask; int nack_busy_id, is_jbus, need_more; if (cpus_empty(mask)) @@ -508,14 +508,20 @@ retry: "i" (ASI_INTR_W)); nack_busy_id = 0; + busy_mask = 0; { int i; for_each_cpu_mask(i, mask) { u64 target = (i << 14) | 0x70; - if (!is_jbus) + if (is_jbus) { + busy_mask |= (0x1UL << (i * 2)); + } else { target |= (nack_busy_id << 24); + busy_mask |= (0x1UL << + (nack_busy_id * 2)); + } __asm__ __volatile__( "stxa %%g0, [%0] %1\n\t" "membar #Sync\n\t" @@ -531,15 +537,16 @@ retry: /* Now, poll for completion. */ { - u64 dispatch_stat; + u64 dispatch_stat, nack_mask; long stuck; stuck = 100000 * nack_busy_id; + nack_mask = busy_mask << 1; do { __asm__ __volatile__("ldxa [%%g0] %1, %0" : "=r" (dispatch_stat) : "i" (ASI_INTR_DISPATCH_STAT)); - if (dispatch_stat == 0UL) { + if (!(dispatch_stat & (busy_mask | nack_mask))) { __asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate)); if (unlikely(need_more)) { @@ -556,12 +563,12 @@ retry: } if (!--stuck) break; - } while (dispatch_stat & 0x5555555555555555UL); + } while (dispatch_stat & busy_mask); __asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate)); - if ((dispatch_stat & ~(0x5555555555555555UL)) == 0) { + if (dispatch_stat & busy_mask) { /* Busy bits will not clear, continue instead * of freezing up on this cpu. */ diff --git a/drivers/serial/suncore.c b/drivers/serial/suncore.c index 70a09a3d5af0..707c5b03bce9 100644 --- a/drivers/serial/suncore.c +++ b/drivers/serial/suncore.c @@ -23,11 +23,36 @@ #include "suncore.h" -int sunserial_current_minor = 64; +static int sunserial_current_minor = 64; -EXPORT_SYMBOL(sunserial_current_minor); +int sunserial_register_minors(struct uart_driver *drv, int count) +{ + int err = 0; + + drv->minor = sunserial_current_minor; + drv->nr += count; + /* Register the driver on the first call */ + if (drv->nr == count) + err = uart_register_driver(drv); + if (err == 0) { + sunserial_current_minor += count; + drv->tty_driver->name_base = drv->minor - 64; + } + return err; +} +EXPORT_SYMBOL(sunserial_register_minors); + +void sunserial_unregister_minors(struct uart_driver *drv, int count) +{ + drv->nr -= count; + sunserial_current_minor -= count; + + if (drv->nr == 0) + uart_unregister_driver(drv); +} +EXPORT_SYMBOL(sunserial_unregister_minors); -int sunserial_console_match(struct console *con, struct device_node *dp, +int __init sunserial_console_match(struct console *con, struct device_node *dp, struct uart_driver *drv, int line) { int off; @@ -133,8 +158,6 @@ sunserial_console_termios(struct console *con) con->cflag = cflag; } -EXPORT_SYMBOL(sunserial_console_termios); - /* Sun serial MOUSE auto baud rate detection. */ static struct mouse_baud_cflag { int baud; diff --git a/drivers/serial/suncore.h b/drivers/serial/suncore.h index 829d7d65d6db..042668aa602e 100644 --- a/drivers/serial/suncore.h +++ b/drivers/serial/suncore.h @@ -22,7 +22,8 @@ extern unsigned int suncore_mouse_baud_cflag_next(unsigned int, int *); extern int suncore_mouse_baud_detection(unsigned char, int); -extern int sunserial_current_minor; +extern int sunserial_register_minors(struct uart_driver *, int); +extern void sunserial_unregister_minors(struct uart_driver *, int); extern int sunserial_console_match(struct console *, struct device_node *, struct uart_driver *, int); diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c index 8ff900b09811..be0fe152891b 100644 --- a/drivers/serial/sunhv.c +++ b/drivers/serial/sunhv.c @@ -562,16 +562,10 @@ static int __devinit hv_probe(struct of_device *op, const struct of_device_id *m port->dev = &op->dev; - sunhv_reg.minor = sunserial_current_minor; - sunhv_reg.nr = 1; - - err = uart_register_driver(&sunhv_reg); + err = sunserial_register_minors(&sunhv_reg, 1); if (err) goto out_free_con_read_page; - sunhv_reg.tty_driver->name_base = sunhv_reg.minor - 64; - sunserial_current_minor += 1; - sunserial_console_match(&sunhv_console, op->node, &sunhv_reg, port->line); @@ -591,8 +585,7 @@ out_remove_port: uart_remove_one_port(&sunhv_reg, port); out_unregister_driver: - sunserial_current_minor -= 1; - uart_unregister_driver(&sunhv_reg); + sunserial_unregister_minors(&sunhv_reg, 1); out_free_con_read_page: kfree(con_read_page); @@ -614,8 +607,7 @@ static int __devexit hv_remove(struct of_device *dev) uart_remove_one_port(&sunhv_reg, port); - sunserial_current_minor -= 1; - uart_unregister_driver(&sunhv_reg); + sunserial_unregister_minors(&sunhv_reg, 1); kfree(port); sunhv_port = NULL; diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c index ff610c23314b..543f93741e6f 100644 --- a/drivers/serial/sunsab.c +++ b/drivers/serial/sunsab.c @@ -832,7 +832,6 @@ static struct uart_driver sunsab_reg = { }; static struct uart_sunsab_port *sunsab_ports; -static int num_channels; #ifdef CONFIG_SERIAL_SUNSAB_CONSOLE @@ -1102,8 +1101,8 @@ static int __init sunsab_init(void) { struct device_node *dp; int err; + int num_channels = 0; - num_channels = 0; for_each_node_by_name(dp, "se") num_channels += 2; for_each_node_by_name(dp, "serial") { @@ -1117,20 +1116,14 @@ static int __init sunsab_init(void) if (!sunsab_ports) return -ENOMEM; - sunsab_reg.minor = sunserial_current_minor; - sunsab_reg.nr = num_channels; sunsab_reg.cons = SUNSAB_CONSOLE(); - - err = uart_register_driver(&sunsab_reg); + err = sunserial_register_minors(&sunsab_reg, num_channels); if (err) { kfree(sunsab_ports); sunsab_ports = NULL; return err; } - - sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64; - sunserial_current_minor += num_channels; } return of_register_driver(&sab_driver, &of_bus_type); @@ -1139,9 +1132,8 @@ static int __init sunsab_init(void) static void __exit sunsab_exit(void) { of_unregister_driver(&sab_driver); - if (num_channels) { - sunserial_current_minor -= num_channels; - uart_unregister_driver(&sunsab_reg); + if (sunsab_reg.nr) { + sunserial_unregister_minors(&sunsab_reg, sunsab_reg.nr); } kfree(sunsab_ports); diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c index e074943feff5..4e2302d43ab1 100644 --- a/drivers/serial/sunsu.c +++ b/drivers/serial/sunsu.c @@ -1528,14 +1528,12 @@ static struct of_platform_driver su_driver = { .remove = __devexit_p(su_remove), }; -static int num_uart; - static int __init sunsu_init(void) { struct device_node *dp; int err; + int num_uart = 0; - num_uart = 0; for_each_node_by_name(dp, "su") { if (su_get_type(dp) == SU_PORT_PORT) num_uart++; @@ -1552,26 +1550,22 @@ static int __init sunsu_init(void) } if (num_uart) { - sunsu_reg.minor = sunserial_current_minor; - sunsu_reg.nr = num_uart; - err = uart_register_driver(&sunsu_reg); + err = sunserial_register_minors(&sunsu_reg, num_uart); if (err) return err; - sunsu_reg.tty_driver->name_base = sunsu_reg.minor - 64; - sunserial_current_minor += num_uart; } err = of_register_driver(&su_driver, &of_bus_type); if (err && num_uart) - uart_unregister_driver(&sunsu_reg); + sunserial_unregister_minors(&sunsu_reg, num_uart); return err; } static void __exit sunsu_exit(void) { - if (num_uart) - uart_unregister_driver(&sunsu_reg); + if (sunsu_reg.nr) + sunserial_unregister_minors(&sunsu_reg, sunsu_reg.nr); } module_init(sunsu_init); diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c index 283bef0d24cb..cb2e40506379 100644 --- a/drivers/serial/sunzilog.c +++ b/drivers/serial/sunzilog.c @@ -63,10 +63,6 @@ readb(&((__channel)->control)) #endif -static int num_sunzilog; -#define NUM_SUNZILOG num_sunzilog -#define NUM_CHANNELS (NUM_SUNZILOG * 2) - #define ZS_CLOCK 4915200 /* Zilog input clock rate. */ #define ZS_CLOCK_DIVISOR 16 /* Divisor this driver uses. */ @@ -1031,18 +1027,19 @@ static struct uart_driver sunzilog_reg = { .major = TTY_MAJOR, }; -static int __init sunzilog_alloc_tables(void) +static int __init sunzilog_alloc_tables(int num_sunzilog) { struct uart_sunzilog_port *up; unsigned long size; + int num_channels = num_sunzilog * 2; int i; - size = NUM_CHANNELS * sizeof(struct uart_sunzilog_port); + size = num_channels * sizeof(struct uart_sunzilog_port); sunzilog_port_table = kzalloc(size, GFP_KERNEL); if (!sunzilog_port_table) return -ENOMEM; - for (i = 0; i < NUM_CHANNELS; i++) { + for (i = 0; i < num_channels; i++) { up = &sunzilog_port_table[i]; spin_lock_init(&up->port.lock); @@ -1050,13 +1047,13 @@ static int __init sunzilog_alloc_tables(void) if (i == 0) sunzilog_irq_chain = up; - if (i < NUM_CHANNELS - 1) + if (i < num_channels - 1) up->next = up + 1; else up->next = NULL; } - size = NUM_SUNZILOG * sizeof(struct zilog_layout __iomem *); + size = num_sunzilog * sizeof(struct zilog_layout __iomem *); sunzilog_chip_regs = kzalloc(size, GFP_KERNEL); if (!sunzilog_chip_regs) { kfree(sunzilog_port_table); @@ -1496,34 +1493,28 @@ static int __init sunzilog_init(void) struct device_node *dp; int err, uart_count; int num_keybms; + int num_sunzilog = 0; - NUM_SUNZILOG = 0; num_keybms = 0; for_each_node_by_name(dp, "zs") { - NUM_SUNZILOG++; + num_sunzilog++; if (of_find_property(dp, "keyboard", NULL)) num_keybms++; } uart_count = 0; - if (NUM_SUNZILOG) { + if (num_sunzilog) { int uart_count; - err = sunzilog_alloc_tables(); + err = sunzilog_alloc_tables(num_sunzilog); if (err) goto out; - uart_count = (NUM_SUNZILOG * 2) - (2 * num_keybms); + uart_count = (num_sunzilog * 2) - (2 * num_keybms); - sunzilog_reg.nr = uart_count; - sunzilog_reg.minor = sunserial_current_minor; - err = uart_register_driver(&sunzilog_reg); + err = sunserial_register_minors(&sunzilog_reg, uart_count); if (err) goto out_free_tables; - - sunzilog_reg.tty_driver->name_base = sunzilog_reg.minor - 64; - - sunserial_current_minor += uart_count; } err = of_register_driver(&zs_driver, &of_bus_type); @@ -1557,8 +1548,8 @@ out_unregister_driver: of_unregister_driver(&zs_driver); out_unregister_uart: - if (NUM_SUNZILOG) { - uart_unregister_driver(&sunzilog_reg); + if (num_sunzilog) { + sunserial_unregister_minors(&sunzilog_reg, num_sunzilog); sunzilog_reg.cons = NULL; } @@ -1590,8 +1581,8 @@ static void __exit sunzilog_exit(void) zilog_irq = -1; } - if (NUM_SUNZILOG) { - uart_unregister_driver(&sunzilog_reg); + if (sunzilog_reg.nr) { + sunserial_unregister_minors(&sunzilog_reg, sunzilog_reg.nr); sunzilog_free_tables(); } } |